Generous to Murphy if you're giving Coburn a F. She owned her bad performance but Murphy was just as poor - he got his tactics badly wrong and finished DFL in a slow race. He was a serious gold medal threat and tanked. He deserves a F as well.
Sisson deserves a B+. She gave her best race. It's not her fault that the global 10k is just so far above the level of US women right now. Honestly, racing the 10k in the next few years is going to be demoralising for US women. It was one thing when Ayana was lapping the field in 2016, it could be dismissed as a one-off or chemically aided. But now, there's multiple women running sub-30 on a consistent basis, as well as breaking 30:30 in tough conditions. I'm not sure how US wom n can bridge that gap